Calcareous rimmed lichen

Circinaria calcarea is a species of crustose lichen in the family Megasporaceae. It was first described as a new species by Carl Linnaeus in his 1753 work Species Plantarum. Linnaeus named it Lichen calcareus, as he classified all lichens in the eponymously named genus. The species has had an extensive taxonomic history, resulting in dozens of synonyms. In 2010, it was placed in its current genus, Circinaria, following molecular phylogenetic analysis of the Megasporaceae.

From Wikipedia, under CC BY-SA 4.0.

Is it poisonous?

We have no record of Calcareous rimmed lichen being toxic, poisonous or venomous. That is not proof that it is safe. Never eat, touch or handle a wild plant, mushroom or animal on the strength of an identification; ask someone qualified.

Easily confused with

• Lecanora rupicola
• Aspicilia cinerea
• Diploschistes actinostomus
• Porpidia tuberculosa
• Pyrenodesmia variabilis
• Acarospora strigata

Classification

Kingdom

Fungi

Phylum

Ascomycota

Class

Lecanoromycetes

Order

Pertusariales

Family

Megasporaceae

Genus

Circinaria

Species

Circinaria calcarea

More species